Reversing-gear.



s. BAADER,

I 1 REVERSING GEAR.

APPLICATION FILED FEB. 10, 1914.

Pa tented Ju ez, 1914.

2 an ve n-kva I Asia altar Baud/er WW I wows u STEPHAN BAADER, OF PHILADELPHIA, PENNSYLVANIA.

REVERSING-GEAR.

Specification of Letters Patent.

Patented J mac 2, 1914.

Application filed February 10, 1914. Serial No. 817,775.

To all whom it may concern Be it known that I, STEPI-IAN BAADER, acitizen of the United States, residing at Philadelphia. in the county of Philadelphia,

and State of Pennsylvania, have invented certain new and useful Improvements in reversing-Gears, of which the following is a specification.

My invention relates to improvements in reversing gears. the object of the invention being to provide an improved fluid controlled mechanism forv reversing the gear of a steam engine and more particularly to provide improved fluid controlled means for locking the operating mechanism against movementand releasing the same only atsuch times as the fluid controlled mechanism is in operation.

A further object is to improve upon the construction covered inmy prior application Serial No, 802,885, filed November 25,

Vith these and other objects in view,

the invention consists in certain novel features of construction and combinations and arrangements of parts aswill be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings Figure 1 is a view in side elevation illustrating my improvements. Fig. 2 is a fragmentary view in section on an enlarged scale taken on the line 2-2 of Fig. 1. Fig. 3 is a similar view taken on the line 3-3 of Fig. 1, and Fig. i is a fragmentary view in section on the line of Fig. 2.

1 represents a cylinder which is closed at its ends by heads 2 and 3 respectively, the latter having a stuffing box t through which an operating rod 5 projects. This rod is secured to a piston 6 within cylinder 1, and at its outer end is provided with an eye 7 for connection with a link (not shown) of any approved link motion to cause the reverse of the engine as is commonly un derstood. This cylinder 1 will be located at any convenient point adjacent the link motion, and at a point removed from the engine cab and the movement of the piston controlled by air or other fluid aswill be hereinafter explained. A valve chest 8 is secured to the top of cylinder 1, and has a cylindrical valve chamber 9 in which a rotary valve 10 is mounted.

Elie cylinder 1 is provided at one side with a flat plate which may becast integral with the cylinder if desired, and on which at one end. a bracket 16 is fixed. This bracket 1.6 supports a rocker shaft 17 having a rocker arm 18 secured thereto and connected by a pivot 19 with :1 depending link 20. The lower end of the link 20 is connected by av pivot 21 with a lever 22,

the pivot. 21 being located approximately midway between the ends of the lever 22. A rocking arm 23 is secured to the stem 2% of valve 10, and is connected at one end by a. link 25 with one end of lever 22. The other end of lever 22 is connected by a pivot 26 with a. depending block 27. This block 27 is provided on its inner face with a lug 28 which is guided vertically in a groove 29 in plate 15. The outer face of the block 27 is provided with a groove 30 in which a cam bar 31 is movable. This cam bar 31 at its forward end is secured to an arm 32 fixed to asplit cross head 33 which clamps the operating rod 5 and a'rod 3% together. The rod 34; projects through a split clal p 35 which is normally held in clamped p sition by means of a piston 36 located in a cylinder 37.

The cylinder 37 is located with its open end against one member of the clamp 35 and secured to the other member of the clamp by bolts 38. The bolts 38 have heads 39 at one end and are projected through openings 4O and ll in the clamp members and then screwed into ears 42 on the cylinder 37. The piston 36 fits the cylinder and bears directly against a clamp'member so that when air is admitted to the outer end of the cylinder, the piston and cylinder are moved in opposite directions to move the clamping lllGIl'lbGlS toward each other to clamp the rod hen the pressure is released, the rod 3% can freely move.

A valve casing 45 is connected to the cylinder 37 by a pipe l3 adja cut its end, and is provided with a rotary valve 46 controlling the flow of fluid to the cylinder. This valve 46 has an inlet port 48 which normally registers with the inlet pipe. 47, so

that air under pressure is admitted to the cylinderto hold the rod 34. in clamped position. An exhaust port 49 is provided in alve 46, and an exhaust port 50 is provided in casing 15, so that when the valve is permitted to turn a predetermined distance. the air can freely escape in the atmosphere and permitthe clamp to'moye to released position.

' in the cylinder operates to clamp the rod,

The movement of valve 46 is controlled by the movement of the valve within casing 8 as set forth fully in my application above referred to, and hence need not be described herein in detail, except to say that the valves do operate in unison, so that when the rod 5 is to be moved, the rod 34: will be released, and When the rod 5 is to be held, the rod 34 will be securely clamped so that there can be no accidental movemeut. v

Variousslight changes might be made in the general form and arrangement of parts described without departing from my in vention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a reversing gear, the combination with a longitudinally movable rod, a split clamp, a cylinder, bolts having heads on one end projected through openings in both members of the split clamp and secured to the cylinder, a piston within the cylinder bearing against one member of the split clamp, and means for admitting fluid to the cylinder between one end thereof and the piston, whereby the pressure of fluid withsubstantially as described.

2. In a reversing gear, the combinationwith a cylinder, a piston in the cylinder, and an operating rod connected to the piston and projecting through one end of the cylinder, of a valve controlling the flow of fluid to and from the cylinder, means for moving the valve, a split clamp holding said rod against movement, a cylinder connected to one member of the split clamp, a

- piston in the last-mentioned cylinder engaging the other member of the split clamp, and means controlling the flow of fluid between the last-mentioned piston and the end of the last-mentioned cylinder, substantially as described.

3. In a reversing gear, the combination with a cylinder, a piston-in the cylinder, and an operating rod connected to the piston and projecting through one end of the cylinder, of a valve controlling the flow of fluid to and from the cylinder, means for moving the valve, a split clamp holding said rod against movement, a cylinder connected to one member of the split clamp, a piston in the last-mentioned cylinder engaging the other member of the split clamp, means controlling the flow of fluid between the lastmentioned piston and the end of the lastmentioned cylinder, said last-mentioned control operating simultaneously with the movement of the first-mentioned valve, substantially as described.

4. In a reversing gear, the combination with a cylinder, a piston in the cylinder, and

an operating rod connected to the piston tioned mechanism comprising a cylinder,

bolts project'ing through one member of the spring clamp and secured to the cylinder, a piston in the last-mentioned cylinder hearing against the other member of the clamp, and said cylinder adapted to receive fluid between the end thereof and the piston, whereby the pressure of fluid moves the piston and cylinder in opposite directions, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

sTEPHAN BAADER.

Witnesses:

MICHAEL FISCIIER, MARTIN SCHUSTER. 

